Fountain-pen.



No. 884,412. PATENTED APR. 14, 1908.

F. J. & A. OBERDOERS'IEB..A

FOUNTAIN PEN.

APPLIUATION FILED Nov. 27. 1907.

FRANK'J. OBERDOERSIER AND ADOLP OBERDOERSTER, OF AKRON, OHIO'.

FOUNTAIN-PEN.

Specification of Letters Patent.

retained Aprn 14, 1908.

Application ed Novemberl 27, 1907; Serial No. 404,108.

To all whom 'it may'concem.'

Be it known that we, FRANK J. OBERDOER- sTERand ADOLPH OBERDOERSTER, citizens of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

Our invention relates to fountain pens and particularly contemplates the provision of a novel and efficient construction whereby the same may be readily, quickly and easily re- Y, filled when desired.

Our invention further and specifically resides in the following features of construction, arrangement and operation to be hereinafter described with reference to the accompanying drawings forming a part of this specification, in which like numerals are used to designate like parts throughout theseveral figures, and in which Figure 1 is a central longitudinal sectional view taken through our improved fountain pen in the closed position. Fig. 2 is a similar View taken through the same in the open position and illustrating its manner of operation at the start and during the operation of refilling it with ink, and Fig. 3 is a central sectional view taken through the valved head of the ink tube, and showing the valve stem projecting therethrough and partly in section.

In the practical embodiment of our invention we provide an outer tubular casing 1 having its rear end 2 closed and provided with a reduced portion for the reception of the tubular cap 3 when the pen is 1n use. The forward end ofthe outer tubular casing 1 is provided with an internally threaded portion adapted to receive a retaining ring 4 and the coupling ring 5 screwed therein and between which is preferably disposed a packing ring 6, said retaining ring, coupling ring and packing ring bearin upon the circumferential face of the ink tu e 7 slidably mounted therethrough with its inner end projecting within the bore of the casing 1 and rovided with an internally threaded portion t erein. A valved head 8 provided with a threaded nipple 9 ada ted to be screwed within the inner end of the ink tube 7, is rovided with a central lopening therethrough) and through said nipp e portion and with a conical cavity 10 1n said head at the end of said opening. Arranged within said conical cavity 10 is aconical valve 11 having its stem 12 projecting throu'ghl'said opening and provided with a longitudlnal groove 13 of substantially greater length than the length of said open-- ing through which it projects. At its opposite end from the valve 11 the stem 12 is provided with a pin 14 projecting therefrom at ht angles to its diameter and between tends and is coiled about the stem 12, said spring being tensioned to draw the valve 11 firmly within the conical cavity 10 which it fits. The ink tube 7 is provided upon its outer end with an ink head 16 provided with a reduced threaded end 17 to screw within the internal threaded outer end of the ink tube7, and with a feeder 18 extending forwardly therefrom and having a longitudinal channel 19 communicating with, though ofi'- set from a vcentral longitudinal opening 19o through the head 16, said opening and said channel being adapted to feed the ink from the tube 7 to the pen point 2() extending from the feeder head 16, for the reception of the same.

The head 16 is provided with a circular shoulder 21 adjacent its reduced end 17 ,and threaded upon its circumferential surface, While the coupling ring 5 of the outer tube 1 is 1provided with a circular flange 22 interna y threaded to allow said threaded shoulder 21V to be screwed therein to couple the plarts ready for use. The feeder head 16 is rther provided with a reduced portion 23 ada ted to receive thereon the tubular cap 3 w en the cap is in disuse, said transferred, to the reduced portion of the closed end 2" of the outer cas1ng 1 when the pen is in use as is well known. Adjacent its rear closed end 2 the outer casing 1 is provided with a pair of diametrically opposite openings 24, while said closed end 2 is provided with a pin 25 extending centrally therefrom within the bore of the outer casing 1 and provided with a coil spring 26 secured thereabout and extending therefrom in said bore, in alinement with the valve 11 of the ink tube 7.

In the operation of our device and with particular reference to Fig. 2; when the device needs to be refilled, the feeder head 16 is first rotated to unscrew the same from the coupling ring 5 and the feeder 18 is thrust and held within a quantity of ink in an ink well or the like. The o erator then gras s an ink head with his left and and laces t e forefinger and the thumb of his right hand ri which and the nipple 9 a coil spring 15 excap 3 being over the openings 24 respectively and slowly draws the outer casing 1 outward upon the ink tube 7, thus causin the vafcuum Within the outer casin 1 to raw open the valve 11 and to suck t e ink up through the feeder opening 19 into the ink tube 7. The fingers are then released and the casings telescoped once. more to their normal position and locked by screwing the head 16 within the coupling ring 5 to the position shown in Fig. 1` The ink tube 7 will by this means be almost entirely filled while no ink will be allowed to escape within the outer casing 1, while in a normalposition ready foruse the coil spring 26 wil bear against the `valve 11 to prevent the same movmg from its seat.

Having thus fully described our invention, we claim:

1. In a fountain pen, the combination of an outer easing, an ink tube slidably mounted within said casing and provided with a feeder and pen point upon lts outer end, said ink tube having a valved inner end, and said outer casing having means whereby a vacuum may be formed therein when the same is drawn rearwardly upon said ink tube to draw the ink u Wardly Within said tube, substantially as escribed.

2. In a fountain pen, the combination with an outer casing, an ink tube slidably -means for normall semis vmounted therein, said ink tube havi a valved inner end and being provided wit a feeder and pen point u on its outer end,

and said outer casing toget er, and means whereby a vacuum may be formed within said outer casing when the same is drawn rearwardly upon said ink tube, to draw the ink u Wardly in said tube, substantially as descrl ed. y

3. In a fountain pen, the combination of an outer casing, an ink tube slidably telescopingly mounted therein and provided wit Van inner valved end, a pen point and inl: conducting mechanism removably secured to the outer end of said ink tube, means for locking said ink tube and said casing together and .means whereby a vacuum may be/formed within saidouter casing when the same is moved. rearwardly upon said ink tube, to draw the ink within said tube, substantially as described.

In testimony whereof we aiiix our signaturesv in presence of two witnesses.

FRANK J. OBERDOERSTER. ADOLPH OBERDOERSTER.

Witnesses WALTER HERBERICH, GEO. W. MERz.

loc 'n said ink tube- 

